I thought they were keeping eze and calling it Zero firm or something like that.

Zero hard is an old plastic available in Spike for example but it is still a medium grade tops plastic. Softer and less durable than grip line Spikes. So Pro (Zero hard) vs Star (Grip) i'd say.

Flat shots need running on the center line of the tee and planting each step on the center line. Anhyzer needs running from rear right to front left with the plant step hitting the ground to the left of the line you're running on. Hyzer is the mirror of that.

Got a couple of each eze and Zero Pures in the mail today from Marshall Street. The grip is the same but the stiffness is not, which I kind of expected. Wondering if the Zero I got was this Zero soft material.

No I have not unfortunately. I've never been a fan of Zero as I mainly push/lob, and the old Zero was too floppy to work for my style, especially when it was warm. Worked well for driving though, didn't matter if it rained, grip was awesome all the same.